For people asking how to reach there:
Download crazy trainer which has a jetpack and fly up. Hydra and rest of the planes don't reach that height quickly. I've reviewed the mod at https://www.youtube.com/watch?v=Jw6eh5cB8gA . Hope you guys find it useful.

I see in the video that you just hopped in a hydra and flew right up to the top. I tried that same thing and cant get anywhere near the top! how in the world did you do that? lol please let me know if there's an additional mod to instal to fly that high. thanks!

Nice mod and a little suggestion, why use cheat? why not make the bottom of the tower have a marker and the top of the tower also have a marker so that way it will teleport you up, its kinda like the tower from Los Santos, walk to the marker and it will teleport you up there

Nice mod and a little suggestion, why use cheat? why not make the bottom of the tower have a marker and the top of the tower also have a marker so that way it will teleport you up, its kinda like the tower from Los Santos, walk to the marker and it will teleport you up there